
.all{
    background-color:lavenderblush;
}
.a{
   position: fixed;
    width: 15%;
    height: 600px;
    background-color:#c3e3b5;
    margin-top:100px;
    font-size: 18px;

}
.b{
    width: 85%;
    position: absolute;
    height: 600px;
    margin-left: 15%;


}
.b1{
    position: fixed;
    background-color: lightgoldenrodyellow;
    width: 100%;
    height: 100px;
    text-align: center;
    line-height: 100px;
    font-size: 25px;
    font-weight: 800;
    color: yellowgreen;
    z-index: 10;
}
.b2{
    margin-top: 100px;
    margin-right: 50%;
    margin-left: 10%;
}